Colours

• What colour is Fe(H2O)6 and what color does it turn with NaOH/NH3?

  Pale green -> Dirty Green Precipitate
• What colour is Cr(H2O)6 and what happens with NH3 (Excess) and NaOH (excess)?

  Green/Violet to green ppt, then green solution/purple solution
• What colour is Fe(H2O)6 and what happens when it reacts with NaOH and NH3?

  Yellow to Brown Precipitate
• What colour is [Cu(H2O)6]2+ and what colour does it change when it reacts with NH3 and then excess NH3?

  Blue to pale blue precipitate, Deep blue solution
• What colour is Mn(H2O)6 and what happens when it is added to a couple drops of NaOH?

  Pale pink colour to Light brown precipitate
• What color is Cu2+ and what color precipitate does it form?

  Blue solution to Blue Precipitate
• What color is Fe2+ and what colour would it go in air and as a hydroxide?

  Hydroxide- Green Precipitate

  Air- orange-brown preciptate
• What color is Fe3+ and what colour is it as a hydroxide?

  Pale yellow to orange brown precipitate
• What colour is Mn and Mn(OH)2?

  Mn- Pale pink

  Mn(OH)2- light brown precipitate